We now perform a numerical analysis for each texture structure in Table. II.
A set of random number inputs is generated for the
three mixing angles \((\theta _{12}, \theta _{23}, \theta _{13})\)  in their \(3\sigma \)  range. Instead, we generate a random input of (\(\delta , \rho , \sigma \) ) in the range of \([0, 2\pi )\) .
From Eqs.(REF ) and (REF ), \(R_{\nu }\)  is fully determined by the neutrino parameters of (\(\theta _{12},\theta _{23},\theta _{13},\delta ,\rho ,\sigma )\) .
We require the input
scattering points acceptable only when \(R_{\nu }\)  falls inside the
\(3\sigma \)  range \([\delta m^{2}_{min}/\Delta m^{2}_{max},\delta m^{2}_{max}/\Delta m^{2}_{min}]\) . From
Eq.(REF ), the three absolute
scale of neutrino masses \(m_{1,2,3}\)  are obtained. We should also consider the robust bound on the sum of three neutrino masses \(\Sigma _\nu (\equiv \Sigma m_i)<0.12\)  eV set by Planck Collaboration at \(95\%\)  CL[1]}. However a latest analysis based on the physically motivated neutrino mass models yields a looser upper bound \(\Sigma _\nu <0.26\)  eV. at \(95\%\)  CL[2]}. In the following analysis, we check the consistency with the both of the bounds. In addition to \(\Sigma _\nu \) , we also calculate the effective Majorana neutrino mass
\(m_{ee}=\left|m_{1}c_{12}^{2}c_{13}^{2}+m_{2}s_{12}^{2}c_{13}^{2}e^{2i\rho }+m_{3}s_{13}^{2}e^{2i\sigma }\right|\) 
